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Finding the Fourth Proportional to 950.54, 1,311.45 and 656.54

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Solution

The fourth proportional to 950.54, 1,311.45 and 656.54 is: 905.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.54 : 1,311.45 = 656.54 : x
  2. Step 2: Convert to fraction form
    950.54/1,311.45 = 656.54/x
  3. Step 3: Cross multiply
    950.54x = 1,311.45 × 656.54
  4. Step 4: Simplify right side
    950.54x = 861,019.38
  5. Step 5: Solve for x
    x = 861,019.38/950.54
  6. Step 6: Final answer
    x = 905.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.